<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Nested Iframe Level</title>
    <style>
        body {
            background-color: #e0e0ff;
            padding: 20px;
        }
    </style>
</head>
<body>
    <h3 id="nested-iframe-heading">Nested Iframe Content</h3>
    
    <div id="nested-iframe-content">
        <p id="nested-paragraph">This is the nested iframe level (child of parent iframe).</p>
        <input id="nested-input" type="text" placeholder="Nested input">
        <button id="nested-button">Nested Button</button>
        
        <div id="nested-links">
            <a href="#nested-link1" id="nested-link1">Nested Link 1</a>
            <a href="#nested-link2" id="nested-link2">Nested Link 2</a>
        </div>
        
        <form id="nested-form">
            <input id="nested-form-input" type="text" name="username" placeholder="Username">
            <input id="nested-form-password" type="password" name="password" placeholder="Password">
            <button id="nested-form-submit" type="submit">Login</button>
        </form>
    </div>
</body>
</html>

